Knitting-machine



(No Model.)

W. AIKEN.

KNITTING MACHINE. No. 279,902. Patented June 26, 1883.

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I UNITED STATES PATENT OFFICEO KNITTING- WVALTER AIKEN, OF FRANKLIN, NEW HAMPSHIRE.

MACHINE.

SPECIFICATION forming part of Letters Patent No. 279,902, dated June 26, 1883.

Application filed March 17, 1881. (N0 model.)

To all whom it may concern:

Be it known that I, WALTER AIKEN, of Franklin, county of Merrimac, State of New Hampshire, hawe invented a new and useful.

Improvement in Knitting-Machines, of which the following description, in connection with the accompanying drawings, is a specification.

This invention in knitting-machines is an improvement on that class of knitting-machine represented in United States Letters Patent with, combined with a cam shifting-bar' em-v bedded or fitted to slide in a recess made in the top of the cam-plate.

Figure 1 represents in top view a sufiicient portion of the knitting-machine, taken in connection with the patents referred to, to enable one conversant with knitting machinery to practieemy invention. Fig. 2 is an under side view of the cainplate and cam shown in Fig. 1, and Fig. 3 a cross-section on the line The cam-plate G is the same as that marked by the same letter in United States Patent No. 217,569, referred to, and will be reciprocated in the same way. The cap B, which holds the cam-plate down in the guide made for it in the side frames of the machine, is also shown in the said patent. The cap B, near each end of the cam-plate, will be provided with an adjustable stop, D, made as a rod, against the innercnd of which the lugs, ears, or ends a of the shifting-bar A will strike a little before the cam-plate Greaches the ends of its stroke in each direction. The upper side of the camplate 0 is grooved or recessed at b, to receive and guide the cam shifting-bar A, which is fitted into the said recess, as shown in Figs. 1 and 3, so that the said shifting-bar is compelled to move accurately in a straightline, and, being let into the plate, may be easily oiled and kept oiled, and is fully guarded against displacement by reason of blows against 5 5 its edges, and is also more thoroughly protect ed against the collection of dust "and dirt under its edges.

The shifting bar A, as herein shown, is adapted to operate two sets of movable cams, (I die 6, they being so held or supported that one cam of each pair of cams may be moved alternately into its full and then into its dotted line position, as shown in Fig. 2, as that cam-plate arrives near the end of its stroke in 6 one or the other direction, the said cams operating substantially as in the Patent No. 222,619, referred to, the rearmost cam of the pair, as the cam plate is moved in one or the other direction, being thrown fully in, as shown, by cams d e in full lines, Fig. 2, when the cam-bar is being moved in the direction of the arrow 2, and vice versa. The innermost or rear cam is the one which by its action 011 the butts of the usual needles draws 7 5 them back far enough to knit, one or the other of each of the two pair of cams drawing back the needles to knit, according to the direction of movement of the cam-plate.

The shiftingbar A is provided, as" herein shown, with two cam-slots, ff or g g, for each pair of cams, the said slots receiving in them the shanks of the pins or screws 72, secured to the said cams. -When the bar A is shifted on the cam-plate, as described, by striking the stops, the cam-slots of the bar, being inclined in opposite directions, act on the said pins h and move one cam of each pair in and the other out.

I have herein shown two pairs of cams se- 0 cured to one cam-plate, as the plate selected to illustrate my invention is adapted to operate two sets of needles, as in some machines made by me.

The heads of the screws it keep the bar A 5 down in the recess 1). The cams m move the needles out, as usual.

and stops to save room in the drawings. The In testimony whereof Ihave signed my name 10 inner end of the stop at the left is shown as to this specification in the presence of two subacting against the shifting-bar scribing witnesses.

I claim 5 The cam-plate provided with the recess bin WALTER AIKEN.

its upper side, combined with the slotted canishifting slide-bar fitted in said recess, and one Vitnesses: or more pairs of cams, substantially as shown G. WV. GREGORY, and described. ARTIEUR REYNoLns. 

